Home / 143,741.12-215,680-64,879.68

Finding the Fourth Proportional to 143,741.12, 215,680 and 64,879.68

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Solution

The fourth proportional to 143,741.12, 215,680 and 64,879.68 is: 97,350.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,741.12 : 215,680 = 64,879.68 : x
  2. Step 2: Convert to fraction form
    143,741.12/215,680 = 64,879.68/x
  3. Step 3: Cross multiply
    143,741.12x = 215,680 × 64,879.68
  4. Step 4: Simplify right side
    143,741.12x = 13,993,249,382.40
  5. Step 5: Solve for x
    x = 13,993,249,382.40/143,741.12
  6. Step 6: Final answer
    x = 97,350.36

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.